Improvement in sewing-machine casters



J. O. SLOAN. Sewing-Machine Caster.

No. 213,844. Patented April I, 1879.

aj-Z [IZUMZZOII p 7.

iml

N. PETERS. PHOTO-UTHOGRAPNH, WASHINGTON. D C.

UNITED STATES PATENT QFFICE.

JOHN O. SLOAN, OF CINCINNATI, OHIO.

Specification forming part of Letters Patent No. 213,844, dated April 1,1879; application filed January 20, 1879.

To all whom it may concern.-

Be it known that I, JOHN O. SLOAN, of Cincinnati, in the county ofHamilton and State of Ohio. have invented certain new and usefulImprovements in Sewin g-Machine Cast ers; and do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which form a part of thisspecification. V

Figure 1 is a plan View of one end of a sixwheel caster forsewing-machines, showing my invention. Fig. 2 is a vertical longitudinalsection of the same. Fig. 3 is an end view of the same. Fig. 4 is asection on line or m of Fig. 1.

Identical parts in the drawings are designated and referred to by thesame letters.

My invention relates to casters for sewingmachines; and it consists in aframe forthe casters so constructed as to be adapted to re ceive andembrace rigidly the feet of the various sewingmachines, as will morefully hereinafter appear.

A are caster-wheels, provided with the usual form of stems, which areinserted in the sockets prepared for them in the frame-pieces, as shownat b b and c. D and D are platforms, upon which the feet of thesewing-machines rest. E E are notches or angles formed in the end piecesE E of the platforms to receive the outer side of foot or legs of thesewing-machine.

F are notches cut in the upper side of the end pieces, central with thenotches E E These notches are to allow the application of my improvedsix-wheel caster to the American button-hole machines, and such othermachines that may be constructed with projections on the legs similar tothose as represented by the dotted lines E.

F is a coupling-bar, provided with the slots f f f and the tongue F. G Gare arms extending from the platforms D D, and are provided with theflanges gg, and so constructed and arranged that the tongue F will fitand freely move therein. H H are bolts, placed in holes properly formedin the ends of the arms G G, which bolts pass through the slots in thecoupling-piece F.

The operation of my invention is as follows: Place the feet of thesewing-machine to which it is to be applied upon the platforms D D,extending the arms G G sufficiently to em brace the feet of the machineupon their outer sides,placing the legs or feetin tlie notches E Eadjusting the coupling-piece in a proper position, closing the endpieces firmly against the legs and slightly tightening the nut of thebolt H, set the bolt H inclined, as shown in the drawings, and tightenits nut rigidly, WhlCll will tighten the end pieces firmly upon the legsof the machine, after which the bolt H should be properly tightened,thus clamping the frame of my casters firmly to the machine.

The inside of the end pieces or flanges of the platforms D D areinclined, so that their upper edges will overreach or embrace the feetof the sewing-machine, and thus more perfectly secure a rigid attachmentfor my casterframe to the sewing-machines.

I am aware that heretofore six-wheel casters have been applied tosewing-machines.

In my patent of August 4, 1874, No. 153,728, I attempted to accomplishthe results attained by this invention; but I have discovered inoperating the said patent that I could not apply my casters to manymachines, which I am now, by my present invention, enabled to do.

What I claim as new, and which I desire to secure by Letters Patent, is-

1. In a frame for attaching caster-wheels to sewing-machines, theplatforms D D, provided with the end-pieces E E and the angles ornotches E E and the notches F, as and for the purposes substantially asset forth.

2. In a frame for attaching caster-wheels to a sewing-machine, theplatforms D D, provided with end pieces E E and angles or notches E, E,and F and stems G G, provided with flanges g g, in combination with thecoupling-piece F, provided with the tongue F, as and for the purposessubstantially as set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

JOHN O. SLOAN.

Witnesses:

P. KmHBoRTH, D. W. BROWN.

